The Secret Service Menu of the Samsung Galaxy A7 (2018) allows you to test hardware functions and check for defects.
However, the name of this menu is not "secret" for nothing, because it can only be opened via a special path.
For this reason we want to explain step by step how to display the secret service menu on the Samsung Galaxy A7 (2018):
Open the secret test menu on the Samsung Galaxy A7 (2018)
Open the phone app on your Samsung Galaxy A7 (2018) and switch to the keypad.
Now you have to enter the following code via the keypad: *#0*#
After entering the # via the keypad, the secret service menu on the Samsung Galaxy A7 (2018) will be opened automatically.
You will now see several tiles, each one representing a function test. For example, select the tile "Sensor" to display various sensor data of the Samsung Galaxy A7 (2018).
This includes for example gyroscope data, magnetic sensor, light sensor data, etc.
You now know how to display the secret service menu on the Samsung Galaxy A7 (2018) using a special code.